# SDR ASAA2020042932688

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2020
- Submitted: April 29, 2020
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 49,885 hours, 14,754 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 13661
- Condition: Faulty
- Location: Ram Air Inlet
- Part time: 9,881 hours, 2,889 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020042932688

## Discrepancy

RIGHT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL AND RESETS WITH MASTER CAUTION. GROUNDED - YES. #2 PZTC LOGGED RT RAM AIR ACT FAULT. REMOVED AND REPLACED R/H RAM AIR DOOR ACTUATOR PER B737-800 AMM 21-51-21. OPERATIONAL TEST PASS. PZTC BITE TEST PASS. RAN PACK W/ APU AND ENGINES NOTING PROPER OPERATION. ETOPS GROUND VERIFICATION SUCCESSFUL.

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